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<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    .box {
      height: 1000px;
      margin: 30px;
      border-top: 1px dashed #ccc;
      background: tomato;
      overflow: auto;
    }
    .box div {
      height: 40000px;
    }
  </style>
</head>
<body>
  <div class="box">
    <div></div>
  </div>
  <script>
    var box = document.querySelector('.box');
    box.addEventListener('scroll', (ev) => {
      ev.preventDefault()
      console.log(window.pageXOffset, window.pageYOffset);
    }, false)
  </script>
</body>
</html>